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import { FunctionCov, RangeCov, ScriptCov } from "./types";
/**
* Compares two script coverages.
*
* The result corresponds to the comparison of their `url` value (alphabetical sort).
*/
export function compareScriptCovs(a: Readonly<ScriptCov>, b: Readonly<ScriptCov>): number {
if (a.url === b.url) {
return 0;
} else if (a.url < b.url) {
return -1;
} else {
return 1;
}
}
/**
* Compares two function coverages.
*
* The result corresponds to the comparison of the root ranges.
*/
export function compareFunctionCovs(a: Readonly<FunctionCov>, b: Readonly<FunctionCov>): number {
return compareRangeCovs(a.ranges[0], b.ranges[0]);
}
/**
* Compares two range coverages.
*
* The ranges are first ordered by ascending `startOffset` and then by
* descending `endOffset`.
* This corresponds to a pre-order tree traversal.
*/
export function compareRangeCovs(a: Readonly<RangeCov>, b: Readonly<RangeCov>): number {
if (a.startOffset !== b.startOffset) {
return a.startOffset - b.startOffset;
} else {
return b.endOffset - a.endOffset;
}
}
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